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Durability testing of silvered-glass mirrors

Sutter, Florian and Fernandez-Garcia, Aranzazu and Heller, Peter and Anderson, K. and Wilson, G. and Schmücker, Martin and Marvig, P. (2014) Durability testing of silvered-glass mirrors. SolarPACES Conference, 16.-19. September 2014, Peking, China.

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Durability analysis of solar mirrors is attracting attention from Concentrating Solar Power (CSP) developers because guaranties of a suitable optical behavior during the whole service life time are required. To give realistic life time estimations in affordable time, research institutes are investing a lot of effort in developing appropriate accelerated aging tests. In this paper, an extensive test campaign of accelerated aging tests has been performed with silvered-glass mirrors from several manufacturers. Three commercial outdoor-proven products, a not outdoor-proven mirror prototype and two mirrors which showed degradation after only three years of outdoor operation in Spain and Australia have been tested. The accelerated aging tests were conducted for an extended period of time in order to determine the testing time at which the two mirror materials that showed degradation outdoors start to fail under the accelerated conditions. The degradation of the outdoor exposed mirrors is analyzed microscopically and compared to the degradation appearing under accelerated aging. The presented data on accelerated testing represents useful information for standardization of durability testing of solar mirrors.

Item URL in elib:https://elib.dlr.de/91809/
Document Type:Conference or Workshop Item (Speech)
Title:Durability testing of silvered-glass mirrors
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Sutter, FlorianFlorian.Sutter (at) dlr.deUNSPECIFIED
Fernandez-Garcia, Aranzazuarantxa.fernandez (at) psa.esUNSPECIFIED
Heller, Peterpeter.heller (at) dlr.deUNSPECIFIED
Schmücker, MartinMartin.Schmuecker (at) dlr.deUNSPECIFIED
Date:16 September 2014
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:solar mirrors, durability testing, accelerated aging, standardization, corrosion
Event Title:SolarPACES Conference
Event Location:Peking, China
Event Type:international Conference
Event Dates:16.-19. September 2014
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:Concentrating Solar Systems (old)
DLR - Research area:Energy
DLR - Program:E SF - Solar research
DLR - Research theme (Project):E - Qualification (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Solar Research > Qualifizierung
Deposited By: Kruschinski, Anja
Deposited On:11 Nov 2014 13:58
Last Modified:11 Nov 2014 13:58

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